import os

def get_douyin_videodir_filename(video_dir:str = 'video_dir') -> list:
    if os.path.exists(video_dir):
        pass
    else:
        os.mkdir(video_dir)
    file_and_dirs=os.listdir(video_dir)
    files = [file for file in file_and_dirs if os.path.isfile(os.path.join(video_dir, file))]
    filenames=[]
    for file in files:
        filenames.append(file.split('.')[0])
    return filenames
